JP2965014B2 - Vernier bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vernier fitting which serves as an overhead wire fitting for connecting an overhead transmission line to a tower or an insulator attached to the tower and a wire clamp side.

[0002]

2. Description of the Related Art In general, in order to adjust the sag of a transmission line, an overhead wire method using a hydraulic sag adjusting pressure tool as shown in FIG. 4 is employed. In this case, a long vernier fitting as shown in FIG. 10 is known as a wire fitting for directly adjusting the sag. The configuration of the conventional vernier fitting 1 is such that a pair of parallel long elongate outer plates 2 and a long elongate intermediate plate 3 are inserted into a gap therebetween, and the outer plate 2 and the intermediate plate 3 are pierced respectively. Of the plurality of adjustment holes 2a and 3a, the adjustment bolt 4 is inserted and connected at an appropriately adjusted adjustment hole position, and is a connection fitting for obtaining a predetermined length when tension is applied to both ends.

In actual use of the sagging adjustment of the vernier fitting 1, the hydraulic sag adjusting pressure tool 5 is mounted in a horizontal position as shown in FIG. 11 or in a vertical position as shown in FIG. However, at this time, the right-angle clevis link-shaped overhead wire fittings 6 and 6 on the electric wire side and the steel tower side connected to both ends of the vernier fitting 1 have mounting holes 6a,
6a is provided to enable horizontal mounting and vertical mounting. The hydraulic looseness adjusting pressure tool 5 is set in the overhead wire fittings 6 and 6. Further, the configuration of the hydraulic sag adjusting pressure tool 5 includes attachment metal fittings 7, 7 serving as parallel links facing the both ends, a supporting rod 8, which is inserted into an intermediate position between the metal attachments 7, 7, and A hydraulic ram 9 is provided at the upper end of the attachment metal fittings 7, 7 which is parallel to the support rod 8.

The hydraulic ram 9 of the hydraulic-type sag adjusting pressure tool 5 exhibiting this kind of link mechanism is operated, and the ram portion 9a
13 is extended as shown by an arrow in FIG. 13, the both ends of the support rod 8 at the intermediate position are used as fulcrums, and the attachment brackets 7, 7 on both sides are provided.
Is pivoted, the connection points 6 ', 6' of the overhead wire fittings 6, 6 connected to the lower ends of the attachment fittings 7, 7 are drawn and the distance between them is reduced. Since the tension of the long middle plate 3 is relaxed and the load is removed, the long outer plate 2 and the long middle plate 3 are drooping around the intermediate adjustment bolt 4 (FIG. 13).

[0005] Thereafter, the bent long outer plate 2 and the long intermediate plate 3 are lifted upward after removing the intermediate connecting adjustment bolt 4, and the long outer plate 2 and the long intermediate plate 3 are lifted up. The adjustment holes 2a and 3a of the middle plate 3 are appropriately selected, and the adjustment bolts 4 are reinserted into the matching adjustment holes 2a and 3a to perform a so-called adjustment rearrangement to connect the adjustment holes 2a and 3a. To adjust the wire slack.

As the use of this conventional vernier fitting 1, for example, in a tension-resistant two-conductor device A shown in FIG. 14, a long middle plate 3 is connected to a steel tower side, and a long outer plate 2 is connected to an electric wire side. Configuration. FIG. 15 is a configuration showing a plan view of FIG.

[0007]

That is, when the take-in operation is performed by the hydraulic looseness adjusting tool 5, the tension of the vernier fitting 1 is removed, and both ends of the vernier fitting 1, as shown in FIG. At the same time as being bent at the connection points 2 'and 3',
The long intermediate plate 3 and the long external plate 2 are bent at the position of the connection adjustment bolt 4 to form a triangle connecting the connection points 2 ', 3', and 4 '. The amount of droop of the long outer plate 2 increases). For this reason, in order to adjust the sag of the electric wire by rearranging the hole positions of the adjustment holes 3a and 2a of the long-sized middle plate 3 and the outer plate 2 and extending or shortening the vernier fitting 1, it is necessary to temporarily suspend the wire. The adjusting bolt 4 must be removed after lifting the middle plate 3 and the long outer plate 2. In this case, the vernier metal fitting itself is heavy, so the worker who rides on the middle plate 3 side leans forward and holds it with his hand, and another worker who rides on the outer plate 2 side leans forward while sliding, Since the adjustment bolts 4 are rearranged for the adjustment holes 3a and 2b of the vernier fitting, the operation is dangerous and requires at least two workers, which is a troublesome operation.

Moreover, in recent transmission lines, the wires have become thicker, stronger, and multi-conductor, and the vernier fittings themselves have become larger and heavier. In an environment with narrow and unstable scaffolds at high altitudes,
This requires a two-person operation with the upper body bent forward, resulting in a highly dangerous operation.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a vernier fitting which solves the above-mentioned problem by providing a mounting point for mounting a hydraulic sag adjusting tool directly at least at one end of the vernier fitting. It was done.

[0010]

According to the present invention, there is provided a vernier metal fitting of an overhead wire construction method for adjusting the sag of an overhead transmission line at a vernier metal fitting position with a hydraulic sag adjusting tool. A pair of long outer skins which are parallel to each other, and an adjusting portion provided with a plurality of adjusting holes inserted in the parallel gap in the longitudinal direction are arranged, and a tool is provided at a rear end side.
Forming an elongated middle plate integrally formed with a support portion for use , and adjusting bolts to be inserted into the appropriate adjustment holes of the elongated outer plate and the appropriate adjustment holes of the elongated middle plate, and the elongated type. Wire-side connection holes and tower-side connection holes are provided at both end positions of the outer plate and the long middle plate ,
In addition, the tool support of the long intermediate plate has a cross yoke structure.
And the left and right and upper and lower end faces
A tool support hole for directly locking one end is provided .

As described above, the vernier fittings serving as the sag adjusting fittings are provided on two parallel long pair of outer plates and one long middle plate interposed therebetween. In order to directly connect one end of the hydraulic sag adjusting tool to the rear end of the middle plate of the shank, the sag is adjusted under tension while the elongate mold of the vernier metal fitting is being used. Attach the attachment fitting end provided at one end of the hydraulic sag adjustment tool to the support hole of the tool support portion at the rear end of the plate, and attach the attachment fitting end provided at the other end of the hydraulic sag adjustment tool. A set configuration is provided for connecting to an intermediate position of a right-angle clevis link-like overhead wire fitting connected to the end of the long type outer plate.

That is, since a part of the hydraulic sag adjusting tool is directly connected to the rear end of the long intermediate plate of the vernier fitting, it is set between the long external plate and the long intermediate plate. Even when the hydraulic ram of the hydraulic sag adjustment tool is operated and the ram is extended to extend the set interval of the hydraulic sag adjustment tool, the part where the hydraulic sag adjustment tool is partially attached is the long middle plate position. Therefore, the long intermediate plate maintains a straight shape due to the wire tension. For this reason, only the two elongate outer panels on the electric wire side use the adjustment bolt position as an adjustment connection point between the elongate outer panel and the elongate intermediate panel as a fulcrum, and the elongate outer panel side Is turned as the connecting point of the parallel clevis link type connecting bracket further connected to the overhead wire fitting, so that the bending (amount of droop) of this long type outer plate becomes minimum and the long type middle plate is It is only necessary to hold the elongate outer panel side and carry out a predetermined adjustment without having to hold it as in the case of the above, and one-person work becomes possible.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vernier fitting of the present invention will be described with reference to the drawings of an embodiment.

FIGS. 1 to 3 show a vernier fitting of an embodiment in which a tool support portion of a long intermediate plate has a cross yoke structure.
10 is a plurality of adjusting holes 2a in a pair of parallel longitudinal directions.
And a plurality of adjusting holes 3 in the longitudinal direction to be inserted into the parallel gap a of the long outer plate 2.
a long intermediate plate 13 integrally formed with an adjusting portion 11 having a hole a different from the hole interval and a tool supporting portion 12 at a rear end portion.
And a vernier fitting comprising an adjusting bolt 4 inserted into a matching position between the adjusting hole 2a and the adjusting hole 3a. In this case, in the long intermediate plate 13, the tool supporting portion 12 formed at the rear end portion has the shape of a cross yoke portion 12a as a whole, and the left and right and upper and lower end surfaces of the cross yoke portion 12a support the tool. A hole 14 is formed so that a set of hydraulic-type sag adjusting tools can be freely mounted vertically and horizontally. In addition, a wire-side connection hole 2b is drilled at the tip of the long outer panel 2, and a tower-side connection hole 3b is drilled at the end of the tool support portion 12.

Now, the operation will be described. When adjusting the length of the vernier fitting 10 and adjusting the sag, first, the vernier fitting 10 is, for example, tensioned as shown in FIGS. 8 and 9.
When incorporated in the conductor device A, the tower-side connection hole 3b at the end of the long intermediate plate 13 is connected to a right-angle clevis 16 that is attached to the double yoke 15 on the tower side, and the electric wire at the tip of the long outer plate 2 A tension clamp 18 for retaining the electric wire 17 is provided in the side connection hole 2b.
Is connected via a parallel clevis link 20, and the electric wire is pulled up by a predetermined overhead wire construction method.

Here, when adjusting the sag of the electric wire, the load on the vernier fitting 10 is temporarily relaxed by using a known hydraulic sag adjusting pressure tool 5 shown in FIG. 4, and the adjusting hole 2a is adjusted. This is performed by changing the selection of the hole 3a. At this time, the lower ends of the pair of attachment fittings 7, 7 located at the front and rear ends of the hydraulic-type sag adjusting pressure tool 5 (in the vertical mounting shown in FIGS. 6 and 7) are connected to the wire fitting 19 of the electric wire side connection fitting 19.
a of the four upper and lower mounting holes 6a provided on the long middle plate 13 and the cross yoke portion 12a of the tool supporting portion 12 of the long intermediate plate 13. It is connected to a predetermined (left / right) support hole 14 among the four support holes 14 of upper, lower, left and right.

Of course, the mounting state of the hydraulic-type sag adjusting pressure tool 5 is not affected by the conductor arrangement. For example, FIG.
As shown in FIG.
As shown in FIG. 6, it is mounted vertically on the vernier fitting 10. The arrangement of the vernier fitting 10 itself is shown in FIGS.
In the tensile strength two conductor device A shown in (1), it is incorporated as a member of a connection fitting interposed between the tower side and the electric wire side.

That is, the tower-side connection hole 3b at the end of the long intermediate plate 13 is connected to a right-angle clevis 16 which is attached to the double yoke 15 on the steel tower side, and the distal end of the long outer plate 2 is connected to the electric wire side. In the hole 2b, a base end of an electric wire side connection metal fitting 19 in which a tension clamp 18 for holding the electric wire 17 is provided at the front is connected via a parallel clevis link 20, and the tension is pulled up by a known overhead wire method. I do.

Here, the work for adjusting the sag of the electric wire will be described in more detail. First, the hydraulic sag adjusting pressure tool 5 is connected to the vernier fitting 10.
To reduce the distance between both ends of the vernier metal fitting 10 to temporarily loosen the tension load applied thereto, and rearrange the connection position of the adjustment hole 2a of the long outer plate 2 and the adjustment hole 3a of the long intermediate plate 13. I do. In this case, in FIG. 6, if the hydraulic-type sagging adjusting pressure tool 5 is operated and the ram portion 9a is appropriately extended, the up-and-down attachment metal fittings 7, 7 arranged in the front and rear directions have a single support rod 8 at an intermediate position. As shown in FIG. 7, the attachment metal fittings 7, 7 are supported at the connection points 8 ', 8' of the support rod 8 as a fulcrum (the sag adjustment pressure tool 5) as shown in FIG.
Side) is widened, and the space between the lower portion (the wire fitting 19a) is extended.
Side) is contracted. For this reason, the overhead wire fitting 19a
Connecting point 6 'and the tool support portion 12 on the side of the long intermediate plate 13
The connecting point 6 'of the supporting hole 14 is moved closer, so that the tension between the long intermediate plate 13 and the long outer plate 2 is released. However, at this time, since the lower end of the one attachment fitting 7 is directly connected to the rear end of the long intermediate plate 13 to which a load is linearly applied, the connection point 6 'is substantially immobile. ing.

Accordingly, the vernier fitting 10 composed of the long intermediate plate 13 and the long outer plate 2 is connected to the connecting point 4 'of the adjusting bolt 4 for connecting the long intermediate plate 13 and the long outer plate 2. Then, the connection point 20 ′ of the parallel clevis link 20 and the connection point 2 ′ of the parallel clevis link 20 and the long outer plate 2 are bent at three bending points. That is, a long intermediate plate 1 that maintains a straight shape
3 itself does not bend, and the long outer plate 2 at the forward position from the connection point 4 'of the adjusting hole 3a is bent down to be bent and the load is removed. The amount of droop is set to be smaller than that of both of the long type outer plates 2 which droop in a V shape and remove the load. Therefore, only one worker riding on the wire side can hold the long outer plate 2 without bending the upper body deeply forward, and the long middle plate 1
It is possible to insert and remove the adjustment bolt 4 through which the long outer plate 2 and the long outer plate 3 are inserted, and the adjustment holes 2a and 3a can be easily rearranged.

Thereafter, the extension or expansion / contraction operation of the hydraulic sag adjusting pressure tool 5 is stopped, so that a predetermined load of tension is applied to the vernier fitting 10, and the sag adjustment is completed by the change of the hole position. It will be.

[0022]

As described above, the present invention relates to a vernier fitting comprising a long outer plate and a long middle plate, wherein at least one of the long middle plates serving as a fitting member has an adjusting hole. Since the adjusting part to be arranged and the tool support part for directly locking one end of the hydraulic type sagging adjustment pressure tool are integrated, even if the hydraulic type sag adjusting pressure tool is actuated, the elongate mold is not used. The plate is maintained in a state in which a load is applied linearly, and even when the load is removed, only the long type outer plate side bends. Therefore, when the conventional hydraulic tool is attached, both the middle plate and the outer plate are bent (V). (Bending) smaller stays. For this reason, it is easy to lift the outer plate that is bent when adjusting the sag, and it is also possible to remove the adjustment bolt and select the adjustment hole with only one worker on the outer plate side, and it is safe and efficient. It is a labor-saving sag adjustment. Moreover, the tool support of the long middle plate is a cross yoke
It has a structure and supports the tool on the left, right, top and bottom end faces
Since the holes are provided, remove the hydraulic
Attach vertically or horizontally according to the surrounding conditions when attaching
Since it can be selected as appropriate, mounting of hydraulic type sag adjustment pressure tool
There is no problem with

In recent years, the use of increasingly large transmission line fittings inevitably increases the size and weight of the vernier fittings, so that the amount of sagging when adjusting the sag becomes a problem. However, in the vernier bracket structure of the present invention, only the long-type outer plate hangs small, so it can be held without taking a dangerous forward bending posture, and only by sliding the outer plate along the middle plate. Adjustment is possible, and the burden of manual work on the worker is small, leading to improvement in safety.

In addition, the vernier fitting of the present invention has a simple structure in which only the shape of the long intermediate plate is improved, so that it is easy to manufacture and the basic handling operation can be the same as in the prior art. Therefore, the effects such as good workability can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of a vernier fitting of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory view of an example of a hydraulic sag adjusting tool used for a sag adjusting operation of an electric wire.

FIG. 5 is an explanatory view of horizontally mounting a hydraulic sag adjusting tool on the vernier fitting of the present invention.

FIG. 6 is an explanatory view for vertically mounting a hydraulic sag adjusting tool to the vernier fitting.

FIG. 7 is an explanatory diagram of a state in which a load is removed from the vernier fitting with a hydraulic sag adjusting tool.

FIG. 8 is a plan view showing a configuration of a wire-side overhead metal fitting of a two-conductor device to which a vernier metal fitting of the present invention is connected.

FIG. 9 is a side view of the same.

FIG. 10 is a perspective view of a conventional vernier fitting.

FIG. 11 is an explanatory view of horizontally mounting a hydraulic sag adjusting tool on the vernier fitting.

FIG. 12 is an explanatory view for vertically mounting a hydraulic sag adjusting tool to the vernier fitting.

FIG. 13 is an explanatory view in which a hydraulic sag adjusting tool is arranged on the vernier fitting and the load is removed.

FIG. 14 is a plan view in which the vernier fitting is configured as a wire-side overhead fitting of a two-conductor device.

FIG. 15 is a side view of the same.

[Explanation of symbols]

 2 Long type outer plate 2a Adjustment hole 3a Adjustment hole 4 Adjustment bolt 10 Vernier bracket 11 Adjustment part 12 Tool support part 13 Long medium plate 14 Tool support hole

Claims (1)

(57) [Claims] 1. A vernier metal fitting of an overhead wire method for adjusting the sag of an overhead transmission line at a vernier metal fitting position with a hydraulic sag adjusting tool, wherein a pair of elongated parallel holes having a plurality of adjusting holes provided in a longitudinal direction. A mold outer plate and an adjusting portion provided with a plurality of adjusting holes to be inserted into the parallel gap in the longitudinal direction, and a long intermediate plate integrally formed with a tool supporting portion on the rear end side. Adjusting bolts to be formed and inserted into the appropriate adjustment holes of the long outer plate and the appropriate adjustment holes of the long intermediate plate, and electric wires at both end positions of the long outer plate and the long intermediate plate A side connection hole and a tower side connection hole are provided .
The support part has a cross yoke structure and its left, right, top and bottom end faces
Tool that directly locks one end of a hydraulic type sag adjustment pressure tool
Vernier metal fittings provided with a support hole for use .